diff --git a/stdlib/2/builtins.pyi b/stdlib/2/builtins.pyi
index 834ea366e82c..d9c2f115abe1 100644
--- a/stdlib/2/builtins.pyi
+++ b/stdlib/2/builtins.pyi
@@ -535,7 +535,10 @@ class dict(MutableMapping[_KT, _VT], Generic[_KT, _VT]):
     def has_key(self, k: _KT) -> bool: ...
     def clear(self) -> None: ...
     def copy(self) -> Dict[_KT, _VT]: ...
-    def get(self, k: _KT, default: _VT = None) -> _VT: ...
+    @overload
+    def get(self, k: _KT) -> Optional[_VT]: ...
+    @overload
+    def get(self, k: _KT, default: _T2) -> Union[_VT, _T2]: ...
     def pop(self, k: _KT, default: _VT = ...) -> _VT: ...
     def popitem(self) -> Tuple[_KT, _VT]: ...
     def setdefault(self, k: _KT, default: _VT = ...) -> _VT: ...
diff --git a/stdlib/2/typing.pyi b/stdlib/2/typing.pyi
index 035f36eae5b8..c7a6af17501c 100644
--- a/stdlib/2/typing.pyi
+++ b/stdlib/2/typing.pyi
@@ -174,15 +174,17 @@ class ValuesView(MappingView, Iterable[_VT_co], Generic[_VT_co]):
     def __contains__(self, o: object) -> bool: ...
     def __iter__(self) -> Iterator[_VT_co]: ...
 
-class Mapping(Sized, Iterable[_KT], Container[_KT], Generic[_KT, _VT_co]):
+class Mapping(Iterable[_KT], Container[_KT], Sized, Generic[_KT, _VT_co]):
     # TODO: We wish the key type could also be covariant, but that doesn't work,
     # see discussion in https: //github.com/python/typing/pull/273.
     @abstractmethod
     def __getitem__(self, k: _KT) -> _VT_co:
         ...
     # Mixin methods
-    def get(self, k: _KT, default: _VT_co = ...) -> _VT_co:  # type: ignore
-        ...
+    @overload  # type: ignore
+    def get(self, k: _KT) -> Optional[_VT_co]: ...
+    @overload  # type: ignore
+    def get(self, k: _KT, default: _VT) -> Union[_VT_co, _VT]: ...
     def keys(self) -> list[_KT]: ...
     def values(self) -> list[_VT_co]: ...
     def items(self) -> list[Tuple[_KT, _VT_co]]: ...
diff --git a/stdlib/3/builtins.pyi b/stdlib/3/builtins.pyi
index bfa315b3d6b0..f7ff48a59a1f 100644
--- a/stdlib/3/builtins.pyi
+++ b/stdlib/3/builtins.pyi
@@ -550,7 +550,10 @@ class dict(MutableMapping[_KT, _VT], Generic[_KT, _VT]):
     def __init__(self, iterable: Iterable[Tuple[_KT, _VT]], **kwargs: _VT) -> None: ...
     def clear(self) -> None: ...
     def copy(self) -> Dict[_KT, _VT]: ...
-    def get(self, k: _KT, default: _VT = None) -> _VT: ...
+    @overload
+    def get(self, k: _KT) -> Optional[_VT]: ...
+    @overload
+    def get(self, k: _KT, default: _T2) -> Union[_VT, _T2]: ...
     def pop(self, k: _KT, default: _VT = None) -> _VT: ...
     def popitem(self) -> Tuple[_KT, _VT]: ...
     def setdefault(self, k: _KT, default: _VT = None) -> _VT: ...
diff --git a/stdlib/3/typing.pyi b/stdlib/3/typing.pyi
index 099f92595b72..63a415390d70 100644
--- a/stdlib/3/typing.pyi
+++ b/stdlib/3/typing.pyi
@@ -250,8 +250,10 @@ class Mapping(Iterable[_KT], Container[_KT], Sized, Generic[_KT, _VT_co]):
     def __getitem__(self, k: _KT) -> _VT_co:
         ...
     # Mixin methods
-    def get(self, k: _KT, default: _VT_co = ...) -> _VT_co:  # type: ignore
-        ...
+    @overload  # type: ignore
+    def get(self, k: _KT) -> Optional[_VT_co]: ...
+    @overload  # type: ignore
+    def get(self, k: _KT, default: _VT) -> Union[_VT_co, _VT]: ...
     def items(self) -> AbstractSet[Tuple[_KT, _VT_co]]: ...
     def keys(self) -> AbstractSet[_KT]: ...
     def values(self) -> ValuesView[_VT_co]: ...